Type Reason Java.Lang.IllegalStateException if it is called before prepare().
Begins capturing and encoding data to the file specified with setOutputFile(). Call this after prepare().
Since API level 13, if applications set a camera via MediaRecorder.SetCamera(Android.Hardware.Camera), the apps can use the camera after this method call. The apps do not need to lock the camera again. However, if this method fails, the apps should still lock the camera back. The apps should not start another recording session during recording.